Do a google search
Once you have a realtor in mind, google them! Check out their website! Read their bio, see what life/work/accomplishments they have and see if you think this is the type of person you want to work with
Do a Social Media Check
The number of followers is not always the most important thing. However, you do want the most amount of eyes on your property! See how the realtor has marketed previous listings. Is this how you would want your home marketed?
Reviews are extremely important. See how others have enjoyed their experience working with that specific realtor.
As much as this is a business transaction, you will be spending a lot of time with this person and communicating with this person. Make sure you can see yourself enjoying the process with them. After all, this should be fun!
Schedule a call or meeting
Meet them in person. This is the best way to see if all of the above check out and you are ready to proceed using this realtor. Meeting for coffee or at their office can help you solidify your search!